// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_PUBLIC_TEST_TEST_FILE_SYSTEM_BACKEND_H_
#define CONTENT_PUBLIC_TEST_TEST_FILE_SYSTEM_BACKEND_H_

#include <stdint.h>

#include <memory>

#include "base/files/file_path.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "storage/browser/fileapi/async_file_util_adapter.h"
#include "storage/browser/fileapi/file_system_backend.h"
#include "storage/browser/fileapi/task_runner_bound_observer_list.h"

namespace base {
class SequencedTaskRunner;
}

namespace storage {
class AsyncFileUtilAdapter;
class FileSystemQuotaUtil;
}

namespace content {

// This should be only used for testing.
// This file system backend uses LocalFileUtil and stores data file
// under the given directory.
class TestFileSystemBackend : public storage::FileSystemBackend {
public:
    TestFileSystemBackend(
        base::SequencedTaskRunner* task_runner,
        const base::FilePath& base_path);
    ~TestFileSystemBackend() override;

    // FileSystemBackend implementation.
    bool CanHandleType(storage::FileSystemType type) const override;
    void Initialize(storage::FileSystemContext* context) override;
    void ResolveURL(const storage::FileSystemURL& url,
        storage::OpenFileSystemMode mode,
        const OpenFileSystemCallback& callback) override;
    storage::AsyncFileUtil* GetAsyncFileUtil(
        storage::FileSystemType type) override;
    storage::WatcherManager* GetWatcherManager(
        storage::FileSystemType type) override;
    storage::CopyOrMoveFileValidatorFactory* GetCopyOrMoveFileValidatorFactory(
        storage::FileSystemType type,
        base::File::Error* error_code) override;
    storage::FileSystemOperation* CreateFileSystemOperation(
        const storage::FileSystemURL& url,
        storage::FileSystemContext* context,
        base::File::Error* error_code) const override;
    bool SupportsStreaming(const storage::FileSystemURL& url) const override;
    bool HasInplaceCopyImplementation(
        storage::FileSystemType type) const override;
    std::unique_ptr<storage::FileStreamReader> CreateFileStreamReader(
        const storage::FileSystemURL& url,
        int64_t offset,
        int64_t max_bytes_to_read,
        const base::Time& expected_modification_time,
        storage::FileSystemContext* context) const override;
    std::unique_ptr<storage::FileStreamWriter> CreateFileStreamWriter(
        const storage::FileSystemURL& url,
        int64_t offset,
        storage::FileSystemContext* context) const override;
    storage::FileSystemQuotaUtil* GetQuotaUtil() override;
    const storage::UpdateObserverList* GetUpdateObservers(
        storage::FileSystemType type) const override;
    const storage::ChangeObserverList* GetChangeObservers(
        storage::FileSystemType type) const override;
    const storage::AccessObserverList* GetAccessObservers(
        storage::FileSystemType type) const override;

    // Initialize the CopyOrMoveFileValidatorFactory. Invalid to call more than
    // once.
    void InitializeCopyOrMoveFileValidatorFactory(
        std::unique_ptr<storage::CopyOrMoveFileValidatorFactory> factory);

    void AddFileChangeObserver(storage::FileChangeObserver* observer);

    // For CopyOrMoveFileValidatorFactory testing. Once it's set to true
    // GetCopyOrMoveFileValidatorFactory will start returning security
    // error if validator is not initialized.
    void set_require_copy_or_move_validator(bool flag)
    {
        require_copy_or_move_validator_ = flag;
    }

private:
    class QuotaUtil;

    base::FilePath base_path_;
    scoped_refptr<base::SequencedTaskRunner> task_runner_;
    std::unique_ptr<storage::AsyncFileUtilAdapter> file_util_;
    std::unique_ptr<QuotaUtil> quota_util_;
    storage::UpdateObserverList update_observers_;
    storage::ChangeObserverList change_observers_;

    bool require_copy_or_move_validator_;
    std::unique_ptr<storage::CopyOrMoveFileValidatorFactory>
        copy_or_move_file_validator_factory_;

    DISALLOW_COPY_AND_ASSIGN(TestFileSystemBackend);
};

} // namespace content

#endif // CONTENT_PUBLIC_TEST_TEST_FILE_SYSTEM_BACKEND_H_
